Stud



M. F. CARR.

STUD.

APPLICATION FILED JUNE 11. 1919.

' A Patented Mar. 30,1920.

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UNITED sTATEs PATENT oEEIoE.

MOSES F. CARR, OF NEWTON, MASSACHUSETTS, ASSIGNOR TO CARR FASTENRCOMPANY, OF CAMBRIDGE, MASSACHUSETTS, A CORPORATION OF MAINE.

STUD.

Specification of Letters Patent. Patented lllar. 30, 1920.

Application led `Tune 11, 1919. Serial No. 303,356.

To all whom t may concern.'

Be it known that I, MosEs F CARR, a c1t1- zen of the United States, anda resident of Newton, in the county of Middlesex and Commonwealth ofMassachusetts, have invented an Improvement in Studs, of which larlyuseful where used in fasteners of the general type shown in UnitedStates Patent No. 1,070,113 issued August 12, 1913.

The invention is particularly useful where wood or machine screws areused for attaching the stud.

In the drawings Figure 1 is a plan of 4a preferred form of stud;

Fig. 2 is a side elevation thereof; I

Fig. 3 is a section, partly in elevation, on the line 3-3 of Fig. 1;

Fig. 4 is a side elevation of the stud cap prior to attachment thereofto the screw; and

Fig. 5 is a section, partly in elevation, on the line 5--5 of Fig. 4.

In the preferred form of my invention shown in the drawings, I haveshown a screw head 6, which i is preferably of the fillister head type,provided with a threaded portion 7 herein shown as of the usual machinescrew type. The screw may be of `any suitable material, but I prefersteel. The head of the screw is provided with a cap portion 8,preferably of brass which may be nickeled. and providing a preferablycontinuous rim 9 surrounding a centraldisk 10,

.i the disk being'preferably recessed to provide a slot 11 within andengaging the sides of the slot in the head of the screw. The slot 11 ispreferably of sufficient length to extend across the entire distancebetween opposite sides of the rim 9. The cap may be secured to the headof the screw by a flange portion 12, rotation of screw andl cap onerelative to the other being prevented by the interengaging slotportions.

IVhile I have shown and described a preferred embodiment of myinvention, it will be understood that considerable changes may be madetherein without departing from the scope of my invention, which is bestdefined in the following claims 1. A stud for stud and socket fastenerscomprising, in combination, a body portion having a head and a threadedextension therefrom, and a cap portion over 'said head,-v said capportionproviding a slot entering a slotextending completely across saidhead portion. y

2. A stud for stud and socket fasteners` comprising, in combination, abody portion having a head and a threaded extension therefrom, a capportion over said head, said -cap portion providing a slot yentering aslot in said head portion and providing a continuous ring surroundingthe end of said head, said slots terminating interiorly of said ring. v

3. A stud for stu-d and socket 'fasteners comprising, in combination, abody portion having a head and a 'threaded extension thereform forentrance into a supporting member, said head having a recessed portionon its u per face, and a cap portion overlying sai head providing acontinuous peripheral ring and having a depression within sai'd ringentering the depressed portion of said body portion.

4. A stud for stud and socket fasteners comprising, in combination, ascrew having entering the slotted portion of the screw,

said cap providing a stud head of greater diameter than the head of saidscrew.

5. A stud for stud and socket fasteners comprising, in combination, ascrew having a slotted head and a threaded projection therefrom, and acap for said screw covering the slotted end of said head and providing adepressed central portion entering said slot.

6. A stud for stud and socket fasteners comprising, in combination, ascrew having v a slotted head and a threaded projection therefrom, a capfor said screw covering the slotted end of said head and providing adepressed central portion entering said slot and a continuous rimportion extending around the periphery of said cap beyond the ends ofsaid depressed portion.

a cap portion over Said head, said cap portion provlding a continuousring surrounding peripherally the outer end of said head ing a slottedhead and a cap overlying said head provided with a central depressedportion entering the slotted portion of the 10 screw, Said Cap providinga stud head of greater diameter than the head of said screw andextending beyond the face thereof.

In testimonyl whereof, i have Signed my 15 name to this specification.

MOSES F. CARR.

